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Finding the Fourth Proportional to 392,883.07, 542,182.40 and 223,118.41

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Solution

The fourth proportional to 392,883.07, 542,182.40 and 223,118.41 is: 307,905.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,883.07 : 542,182.40 = 223,118.41 : x
  2. Step 2: Convert to fraction form
    392,883.07/542,182.40 = 223,118.41/x
  3. Step 3: Cross multiply
    392,883.07x = 542,182.40 × 223,118.41
  4. Step 4: Simplify right side
    392,883.07x = 120,970,875,017.98
  5. Step 5: Solve for x
    x = 120,970,875,017.98/392,883.07
  6. Step 6: Final answer
    x = 307,905.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.